Pillarbox

Botanicula is a point-and-click adventure game developed by Amanita Design. I'm not even convinced it's a game. It's definitely point and click, and it might be an adventure, but game I am not convinced about. You click on random things until something happens, and then you ask 'was that actually what I wanted to happen?' before realizing that no, you still don't know what the point of all this even is.

On a bright note, wikipedia says that Botanicula is helping the World Land Trust to protect hundreds of acres of rainforest.

Cave Story platform-adventure video game released in 2004 for the PC. It was developed, designed, and programmed over five years by Daisuke "Pixel" Amaya in his free time. Cave Story features 2D platform mechanics and is intended as an homage to the classic games that the author played in his youth, such as Metroid, Blaster Master, and Castlevania.

VVVVVV (pronounced as "The Letter V Six Times" or "V's") is a 2D puzzle platform video game designed by Terry Cavanagh and scored by Magnus Pålsson. The game was built in Adobe Flash and released on January 11, 2010, for Microsoft Windows and Mac OS X.

From the art and stories of famed graphic novelist and filmmaker Enki Bilal, and the studio created by adventure game legend Benoit Sokal comes Nikopol: Secrets of the Immortals.

Set in France in the year 2023, the country is governed by a dictator who rules by religious absolute power. A mysterious ship shaped like a pyramid has just appeared in the sky and sent representatives to speak with the French government.

As Nikopol, you will find yourself in a suspenseful adventure to find your father and thwart a dangerous conspiracy. Entangled in political intrigue you're caught between two worlds, one of anarchy and one of immortality.

When Isaac’s mother starts hearing the voice of God demanding a sacrifice be made to prove her faith, Isaac escapes into the basement facing droves of deranged enemies, lost brothers and sisters, his fears, and eventually his mother.

SpaceChem is an intriguing, "problem-solving centric" puzzle game by Zachtronics Industries that combines the logic of computer programming with the scientific domain of chemistry, set in an original science fiction universe. Players build machines using mechanics similar to visual programming that assemble and transform chemical compounds. Players later connect those machines together to form complex pipelines, and ultimately construct special pipelines to fight back against space-monsters that threaten humanity.

Super DX-Ball delivers a vibrant and colorful brick-breaking game that the whole family can enjoy. Created by Michael P. Welch, the original author of DX-Ball, this game brings together the amazing world of tessellation and repeating patterns with the classic game play of DX-Ball. Hand-crafted by an old pro, Super DX-Ball is the quintessential brick-breaking game that you've been searching for. http://www.blitwise.com/superdxb.html